How to Fix: How do you assert that a certain exception is thrown in JUnit tests?

Method 1: Using @Throws Annotation

1. Step 1: Annotate your test method with @Test and add the @Throws annotation.

Example Code:

@Test
@Throws(IndexOutOfBoundsException.class)
public void testFooThrowsIndexOutOfBoundsException() {
    foo.doStuff();
}

This will ensure that the testFooThrowsIndexOutOfBoundsException method is executed only if an IndexOutOfBoundsException is thrown by the code being tested.